随着用水矛盾的日益突出，节水灌溉愈来愈显得迫切。混凝土防渗渠道具有防渗好、糙率小、允许流速大、强度高及使用年限久等优点，可适应各种条件。但搞好施工；确保工程质量才能正常发挥其功能，延长其使用年限。！．施工准备在工程开工前首先要搞好各方面协调工作。一是规划? With the increasingly prominent contradiction of water use, water-saving irrigation is more and more urgent. Concrete anti-seepage channel with impermeable good, small roughness, allowing flow velocity, high strength and long service life, etc., can adapt to various conditions. But do a good job in construction; to ensure the quality of the project can play its normal function, to extend its useful life. ! . Construction Preparation Before the start of the project, it is necessary to do a good job in all aspects of coordination. First, planning?